Easy Made Stat

Definition Data are called paired when you choose to compare the subjects of your study two by two instead of comparing one whole group to another whole...

What is a p-value? In clinical research, the aim of a study is usually to determine the efficiency of a treatment or an intervention studying the differenc...

Definition The Log-rank test is used to compare survival or time before an event occurence between two or more groups. It compares the observed number o...

Definition The Chi² test is used to compare two proportions from two or more groups. It helps to conclude if there seems to be an association between tw...

Definition The Fisher’s test is used to compare two proportions from two independent groups. It helps to conclude if there seems to be an association be...

Definition The McNemar's test is an alternative to the Chi² test, that compares proportions between group, for paired data. Paired data are data wh...

Definition The Shapiro-Wilk's test aims to determine whether a variable has a normal distribution (bell-shaped distribution). It is the most effici...

Definition The Student's t-test is used to compare two means from two independent groups. The conditions of application for this test are : the dat...

Definition The Mann-Withney test is a non-parametric test used to compare the distribution of a numeric variable from two independent groups. It is an a...

Definition The Welch's test is a non-parametric test used to compare two means from two independent groups. It was historically used as an alternat...